But now I receive a ZIP file which contain the PDF file (or much). I must extract the file (I do that) and give the stream to the panel (I can't save the file for use it). How can I give the stream for display it?

Is your solution working in Internet Explorer (9)?
Whatever I try, i can't manage to show a byte array in Internet Explorer.
Byte Array in Chrome: done
PDF-File in IE9: done
Byte Array in IE9: absolutely no idea...